Open 3Delight's Render Settings and enable Indirect Illumination.

 In Scene Elements, make sure that the environment is used for the Background Fill.

Create an environment light by clicking on the checker board button next to Environment Light.

Click on AE to open the environment node in the Attribute Editor and then click on the checkboard icon to connect our 3Delight Sky shader to the Texture parameter.

Select 3Delight Sky form the HyperShade nodes list.